/* 通用基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow-x: hidden;
    overflow-y: auto;
    margin: 0;
    padding: 20px 0;
}

/* 背景几何图形 */
.bg-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
    top: 0;
    left: 0;
    z-index: 1;
}

.shape {
    position: absolute;
    opacity: 0.08;
}

.circle {
    border-radius: 50%;
    background: linear-gradient(135deg, #00b4a0, #2d7f7f);
}

.square {
    background: linear-gradient(135deg, #0066cc, #004499);
    transform: rotate(45deg);
}

.plus {
    color: #00b4a0;
    font-size: 80px;
    font-weight: 300;
    line-height: 1;
}

.dna {
    width: 80px;
    height: 120px;
    border: 3px solid #0066cc;
    border-radius: 40px;
    position: relative;
}

.dna::before,
.dna::after {
    content: '';
    position: absolute;
    width: 30px;
    height: 30px;
    border: 3px solid #0066cc;
    border-radius: 50%;
}

.dna::before {
    left: 10px;
    top: 25%;
}

.dna::after {
    right: 10px;
    bottom: 25%;
}

/* React根元素样式 */
#root {
    width: 100%;
    height: 100%;
    position: relative;
}

/* 响应式设计 */
@media (max-width: 480px) {
    body {
        padding: 10px 0;
    }
}
